Retusidae is a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

of very small sea snails, barrel-bubble snails,

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

opisthobranch Opisthobranchs () is now an informal name for a large and diverse group of specialized complex gastropods which used to be united in the subclass Opisthobranchia. That taxon is no longer considered to represent a monophyletic grouping. Euopis ...

gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

s. These are headshield slugs, in the superfamily

Bulloidea Bulloidea is a superfamily of sea snails, or bubble snails, marine gastropod mollusks.Bouchet, P. (2010). Bulloidea Gray, 1827. In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.ph ...

.Bouchet, P. (2012). Retusidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=156 on 2012-08-19

Genera

Genera within the family Retusidae include: * '' Pyrunculus'' Pilsbry, 1895 * '' Relichna'' Rudman, 1971 * '' Retusa'' T. Brown, 1827 * '' Sulcoretusa'' J.Q. Burch, 1945 ;Genera brought into synonymy: * ''Coleophysis'': synonym of ''Retusa'' T. Brown, 1827 * ''Cylichnina'' Monterosato, 1884: synonym of ''Retusa'' T. Brown, 1827 * ''Mamilloretusa'' F. Nordsieck, 1972 accepted as ''Retusa'' T. Brown, 1827 * ''Sao'' H. Adams & A. Adams, 1854 accepted as ''Pyrunculus'' Pilsbry, 1895 * ''Sulcularia'' Dall, 1921 accepted as ''Sulcoretusa'' J.Q. Burch, 1945 * ''Utriculus'' T. Brown, 1844 accepted as ''Retusa'' T. Brown, 1827

References

* Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Retusa leptoeneilema 01

External links

Miocene Gastropods and Biostratigraphy of the Kern River Area, California; United States Geological Survey Professional Paper 642

Serge GOFAS, Ángel A. LUQUE, Joan Daniel OLIVER,José TEMPLADO & Alberto SERRA (2021) - The Mollusca of Galicia Bank (NE Atlantic Ocean); European Journal of Taxonomy 785: 1–114
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